schemas/vegbien.sql: unscrubbed_taxondetermination_view: Inner-join to taxonverbatim and taxonlabel instead of LEFT JOINing, because only taxondeterminations with a taxonlabel can have accepted taxondeterminations (otherwise there would be no name to scrub)

schemas/vegbien.sql: unscrubbed_taxondetermination_view: Inner-join to tnrs instead of LEFT JOINing, because only taxondeterminations whose taxonlabels have already been scrubbed by TNRS should have accepted taxondeterminations added. Removed now-unneeded filter by tnrs.Name_submitted IS NOT NULL, which is replaced by the inner join.

sql_io.py: put_table(): ensure_cond(): Fixed bug where need to wrap strings used in the tracked error message in strings.ustr()

xml_dom.py: replace_with_text(): Fixed bug where need to use scalar.is_nonnull_scalar() instead of is_scalar() to avoid converting None values to the string 'None'

scalar.py: Added is_nonnull_scalar()

README.TXT: Data import: Fixed bug where `make inputs/upload` needs to be run on local machine, not vegbiendev

sql.py: create_table(): Support creating a table like a view

sql.py: Added InvalidTypeException and parse it in parse_exception()

mappings/VegCore.csv: Regenerated from wiki

schemas/vegbien.sql: taxondetermination_set_iscurrent(): Fixed bug where need to sort scrubbed determinations first for scrub.make to work. (Otherwise, a datasource determination might remain iscurrent even after a scrubbed determination was added, causing scrub.make to repeatedly attempt to re-add it.)